GB1288248A - - Google Patents

Info

Publication number
GB1288248A
GB1288248A GB5468969A GB5468969A GB1288248A GB 1288248 A GB1288248 A GB 1288248A GB 5468969 A GB5468969 A GB 5468969A GB 5468969 A GB5468969 A GB 5468969A GB 1288248 A GB1288248 A GB 1288248A
Authority
GB
United Kingdom
Prior art keywords
polymer
weight
sand
olefin
foundry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5468969A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19681807453 external-priority patent/DE1807453C/en
Priority claimed from DE19691952357 external-priority patent/DE1952357A1/en
Application filed filed Critical
Publication of GB1288248A publication Critical patent/GB1288248A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives

Abstract

1288248 Foundry sand containing an olefin polymer RAVENSBERGER EISENHUTTE REINSHAGEN & VOGT 7 Nov 1969 [7 Nov 1968 17 Oct 1969] 54689/69 Headings C3N and C3P A foundry moulding sand composition comprises sand, a binder, and unexpanded particles of a polymer which is a homopolymer of an olefin or an aromatic olefin or a copolymer of at least two monomers selected from olefins and aromatic olefins; the polymer having a particle size of less than 0À3 mm. and forming 0À05-3%, preferably 0À5-2%, by weight of the moulding composition. The polymer may be polystyrene, polyethylene, polypropylene, ethylene-propylene, propylene-styrene or ethylene-propylenestyrene copolymer. The polymer may be added in the form of a dry powder, a suspension or emulsion. The polymer may be a pearl polymerization product preferably coated with a colloidal layer of bentonite. The binder is preferably a clay such as bentonite and may be used in an amount 5-10% by weight, preferably 6-8%, based on the weight of sand. The composition is thereafter mixed with sufficient water such as 3-7%, suitably 4-6%, by weight based on the weight of the sand. The prior art refers to the addition of coal dust, lignite dust, finely powdered pitch with or without clay, cement, lime, gypsum, flue dust or lignite dust, and polystyrene to foundry sands.
GB5468969A 1968-11-07 1969-11-07 Expired GB1288248A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19681807453 DE1807453C (en) 1968-11-07 Use of polymers of styrene, propylene or ethylene in green sand molding compounds
DE19691952357 DE1952357A1 (en) 1969-10-17 1969-10-17 Styrene ethylene or propylene polymers - replacing carbon dust in casting mould comps

Publications (1)

Publication Number Publication Date
GB1288248A true GB1288248A (en) 1972-09-06

Family

ID=25756377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5468969A Expired GB1288248A (en) 1968-11-07 1969-11-07

Country Status (10)

Country Link
US (1) US3666706A (en)
JP (1) JPS4821687B1 (en)
AT (1) AT298702B (en)
BE (1) BE741347A (en)
CH (1) CH551236A (en)
DK (1) DK129505B (en)
FR (1) FR2022789A1 (en)
GB (1) GB1288248A (en)
NL (1) NL165670C (en)
SE (1) SE356238B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073761A (en) * 1971-08-23 1978-02-14 Hooker Chemicals & Plastics Corp. Polyethylene emulsion containing resin binder compositions and processes
SE413997B (en) * 1977-01-17 1980-07-07 Westin & Backlund Ab SET FOR MANUFACTURE OF CASTING OR CASTOR CORN FROM A WATER-CONTAINING FORMAND, BINDING AND CARBONIC MATERIAL THAT CAN IMAGE SO CALLED GLASS COOL, AND FORMULA INTENDED TO BE USED IN THE SET
DE3305745A1 (en) * 1983-02-17 1984-08-23 Hüttenes-Albertus Chemische Werke GmbH, 4000 Düsseldorf Process for the preparation of a lustrous carbon former for foundry applications
FR2771663B1 (en) 1997-12-03 2000-02-18 Manfred Buchler FLUID COMPOSITION CAPABLE OF PRODUCING GLOSSY CARBON DURING CASTING OF METAL AND PROCESS FOR PREPARING THE SAME
DE102007020586A1 (en) * 2007-05-02 2008-11-06 Ashland-Südchemie-Kernfest GmbH Coating materials for casting molds and cores to avoid reaction gas defects
CN102909314A (en) * 2012-09-29 2013-02-06 温州市康霸洁具有限公司 Resin sand

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857355A (en) * 1953-10-27 1958-10-21 Du Pont Polyethylene-estersil composition
US2988525A (en) * 1957-07-09 1961-06-13 American Colloid Co Foundry mold composition
US3005244A (en) * 1958-06-09 1961-10-24 Howe Sound Co Production of shell molds
US3467165A (en) * 1965-10-22 1969-09-16 Georgi S Angeloff Method of making foundry molds

Also Published As

Publication number Publication date
SE356238B (en) 1973-05-21
CH551236A (en) 1974-07-15
DK129505C (en) 1975-03-17
FR2022789A1 (en) 1970-08-07
DK129505B (en) 1974-10-21
NL165670C (en) 1981-05-15
AT298702B (en) 1972-04-15
NL165670B (en) 1980-12-15
US3666706A (en) 1972-05-30
NL6916249A (en) 1970-05-11
JPS4821687B1 (en) 1973-06-30
BE741347A (en) 1970-04-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee